JPH082155Y2 - Cassette storage case - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a magnetic tape cassette storage case, and more particularly to an improvement of a magnetic tape cassette storage case used when storing a magnetic tape cassette for audio.

[Conventional technology]

A magnetic tape cassette used for audio or the like is usually stored in a magnetic tape cassette storage case made of plastic (hereinafter, simply referred to as "cassette storage case") during storage.

The cassette storage case has a cassette front opening into which a magnetic head or the like is inserted when the magnetic tape cassette (hereinafter referred to as “cassette”) is loaded in a recording / reproducing apparatus, and the cassette storage case may cross the front opening. Since it has a magnetic tape mounted on the front side, it prevents dust from entering the cassette through the front opening, protects the magnetic tape located at the front opening, and protects the entire cassette. It is used for the purpose of protecting.

FIG. 5 shows the basic structure of a conventional cassette storage case. The cassette storage case 31 includes a lid 32 having a pocket 34 into which the front opening of the cassette 20 is inserted and a cassette 20.
The casing portion 35 is provided with a pair of anti-rotation projections 7 which are inserted into the shaft insertion hole 22. Then, the cassette storage case 31 is fitted with a support shaft projecting on the left and right inner sides of the casing portion 35 and a hole transparently formed in the end side wall of the pocket 34, so that the casing portion 35 and the casing The lid 32 can be opened and closed like a door.

In addition, the cassette storage case 31 has a space between the wall portions 33 and 36 facing the front and back surfaces of the cassette 20,
Is formed with a space corresponding to the thickness of the cassette thickness increasing portion 21 forming the front opening. Therefore, the thickness l _{1 of the} cassette storage case 31 is considerably larger than the thickness l ₂ of the cassette excluding the cassette thickness increasing portion 21. Therefore, the cassette storage case 31 requires a considerably large storage space as compared with the case where the cassette 20 is stored as it is.

Therefore, when a general user wants to store the cassette 20 in a limited space, for example, when trying to store as much as possible in a console box of an automobile, it may not be stored in the cassette storage case 31. . However, if the cassette 20 is stored without being stored in the cassette storage case 31, dust easily enters the cassette, which promotes the deterioration of the recording / reproducing characteristics of the magnetic tape and is directly subjected to an impact such as a drop. There was a problem such as damage due to damage.

In order to solve the above problems, the applicant of the present invention has previously proposed a thin cassette storage case (Shokai 60-163279).
No. 63-52782 (Kaikai Sho 63-52782).

In this thin cassette storage case, the cassette is stored in the opposite direction to the conventional one, the cassette thickness increasing portion is located on the open side of the cassette storage case, and a recess for receiving the cassette thickness increasing portion is formed in the case. It is a structure formed on the upper and lower wall surfaces. That is, for example, the above-mentioned actual exploitation 63-52
The improved cassette storage case described in Japanese Patent No. 782 will be described with reference to FIG. 4. In this cassette storage case 11, a lid portion 12 having a pocket 14 and a casing portion 15 are conventional cassette storage cases. Similarly, on the open side of the walls 13 and 16 which are widely pivoted to the front and back surfaces of the cassette of the lid portion 12 and the casing portion 15, a concave portion 18, which receives the cassette thickness increasing portion 21, 18 are formed.

The recesses 18, 18 are formed inside the case so as to face each other, and have a depth and shape for receiving the cassette thickness increasing portion 21.

As a result, the cassette storage case 11 is
It is possible to configure the distance between the wall portion 13 and the wall portion 16 excluding 8, 18 to be a distance slightly larger than the thickness l ₂ other than the cassette thickness increasing portion 21. I was able to make it quite thin. Therefore, the storage space has been reduced and the usability as a portable device has been greatly improved compared to before.

[Problems to be solved by the device]

However, in the thin cassette storage case 11, the magnetic head insertion opening 23 of the cassette 20 is located on the open side of the cassette storage case. Therefore, the lid 12
It becomes easy for a finger or the like to come into contact with the magnetic tape 24 exposed in the magnetic head insertion opening 23 when opening the. When the fingers touch the magnetic tape 24, undesired accidents such as recording signal dropout due to dust adhesion and tape slack, and further scratching of the tape are likely to occur, and these are preferable for recording and reproducing. Absent.

Further, since the recesses 18 and 8 are formed thin, the mechanical strength of the lid 12 and the portion of the casing 15 near the recesses 18 and 18 is weaker than other portions. Therefore, when a load is applied to the edges near the recesses 18 when the lid 12 is opened and closed, there is a problem that damage due to bending, cracking or the like is likely to occur.

That is, the object of the present invention is to solve the above-mentioned drawbacks, avoid the contact between the magnetic tape and fingers when opening the lid as described above, and prevent the bending and cracking in the vicinity of the recess, and the thin cassette storage case. To provide.

[Means for solving the problem]

The above object of the present invention is to provide a cassette storage case in which a lid member having a pocket for accommodating the front opening of the cassette and a casing member having an anti-rotation projection are pivotally mounted to be openable and closable in the front opening of the cassette. forming a recess for receiving a cassette thickness increasing portion was is formed on the upper and lower inner walls of said pocket, and the cassette inserting direction with a large case lateral width W from the cassette lateral width W ₁ of recess the cassette thickness increasing portion To the front and back surfaces of the cassette in a wide area, and the recessed portion on the side of the wall is the dimension L _{1 of the} cassette thickness increasing portion in the cassette front-rear direction.
And a depth dimension L ₂ of the pocket and a width L in the front-rear direction of the case from the back of the pocket, which is larger than the sum of the depth dimension L ₂ of the pocket and the pocket.

[Embodiment]

Hereinafter, an embodiment of a cassette storage case according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a cassette storage case according to the present invention, and FIGS. 2 and 3 are cross-sectional views of a main part showing a state where a cassette is stored in a pocket.

The cassette storage case 1 has a lid 3 having a pocket 2.
And a casing portion 4 provided with a pair of anti-rotation projections 9 are pivotally mounted, and the upper and lower inner walls of the pocket 2 for accommodating the front opening portion of the cassette 20 are formed at the front opening portion of the cassette 20. Recess for receiving the increased cassette thickness portion 21
8a and 8b are formed.

The recessed portion 8a is formed on the pocket side of the wall portion 5 that widely faces the front and back surfaces of the cassette of the lid portion 3, and the recessed portion 8b is
It is formed on the inner wall of the pocket 6 facing the recess 8a.

In addition, the width W in the lateral direction of the case, which is the width of the recesses 8a and 8b with respect to the cassette insertion direction, is defined by the cassette thickness increasing portion.
The width may be set larger than the width W ₁ of the cassette 21 in the left-right direction (see FIG. 4), but is preferably formed slightly larger than W ₁ by a minute interval.

Further, the recess 8b is formed over the entire front-rear direction of the case in the pocket portion 6, but the width L of the recess 8a in the front-rear direction from the back of the pocket (see FIGS. 2 and 3) is It is formed to be slightly larger than the sum of the cassette front-rear direction dimension L ₁ of the cassette thickness increasing portion 21 and the depth dimension L ₂ of the pocket portion 6. Further, a taper surface or a curved surface is appropriately formed at the edge of the recess 8a on the case opening side to facilitate the storage and removal of the cassette 20.

Therefore, the cassette 20 is placed in the cassette storage case 1
When storing in the cassette, first, the cassette thickness increasing portion 21
After loading one side surface into the recess 8a, the cassette 20
Slide inward of the pocket (in the direction of arrow A in FIG. 2), the cassette thickness increasing portion 21 is received in the recesses 8a and 8b, and the front opening of the cassette 20 is accommodated in the pocket 2. Therefore, the cassette storage case 1 can be closed.

When the cassette storage case 1 is closed,
The distance between the wall portion 5 and the wall portion 5, which are opposed to the front and back surfaces of the cassette of the casing portion 4 in a wide area, is set to be slightly larger than the thickness l _{2 of the} cassette 20 other than the cassette thickness increasing portion 21. In addition, the distance between the recesses 8a and 8b is set to be slightly larger than the thickness of the cassette thickness increasing portion 21.

The material of the cassette storage case 1 may be the same as the conventional one and is not particularly limited. Further, the thickness of the cassette storage case 1 may be the same as the conventional one as long as it satisfies the protection requirement of the cassette 20.

That is, like the above-mentioned thin cassette storage case 11, without providing the magnetic head insertion opening 23 of the cassette 20 on the opening side of the cassette storage case, it is possible to obtain a cassette storage case which is considerably thinner than the conventional case. I was able to. Further, since the recesses 8a, 8b are formed in the pocket 2 having a U-shaped cross section and having high mechanical strength, the mechanical strength of the entire cassette storage case is not significantly reduced.

Therefore, when the lid portion 3 is opened, the magnetic tape 24 exposed in the magnetic head insertion opening 23 is brought into contact with a finger or the like, and dust is attached to the tape surface, the tape is slackened, or the tape is damaged. When an undesired accident occurs or force is applied in the case thickness direction when the cassette is stored,
Without the deformation due to the deformation of the thinned lid portion 3 due to the formation of 8a, 8b and the bending or cracking,
It is possible to reduce the storage space of the cassette storage case and improve the usability for carrying.

[Effect of device]

As described above, the cassette storage case of the present invention is
A lid member having a pocket for accommodating the front opening of the cassette and a casing member having an anti-rotation projection are pivotally mounted to be openable and closable, and a recess formed in the front opening of the cassette for receiving the cassette thickness increasing portion. Are formed in the upper and lower inner walls of the pocket, and these recesses extend in the cassette insertion direction with a width W in the case left-right direction larger than the width W _{1 in the} left-right direction of the cassette of the cassette thickness increasing portion, and widely oppose the front and back surfaces of the cassette. The recess on the side of the wall that is formed is the dimension L _{1 in} the cassette front-rear direction of the cassette thickness increasing portion.
And the width L of the case in the front-rear direction from the back of the pocket, which is larger than the sum of the depth dimension L _{2 of the} pocket and the depth dimension of the pocket.

Therefore, it is possible to obtain a cassette storage case that is considerably thinner than the conventional case without locating the magnetic head insertion opening of the cassette thickness increasing portion received in the recess on the open side of the cassette storage case. Further, since the recess is formed in the pocket having a U-shaped cross section and high mechanical strength, the mechanical strength of the entire cassette storage case is not significantly reduced.

Therefore, it is possible to provide a compact, durable and thin cassette storage case that is easy to use.

[Brief description of drawings]

FIG. 1 is a perspective view of a cassette storage case according to the present invention,
2 and 3 are cross-sectional views of a main part showing a state of accommodating a cassette in a pocket, and FIGS. 4 and 5 are perspective views for explaining a conventional cassette accommodating case. (Reference numeral in the figure) 1 ... Cassette storage case, 2 ... Pocket, 3 ... Lid part, 4
... Casing part, 5,10 ... Wall part, 6 ... Pocket part, 7 ... Anti-rotation protrusion, 8a, 8b ... Recessed part, 9 ... Anti-rotation protrusion, 11,31 ...
Cassette storage case, 12, 32 ... Lid part, 14, 34 ... Pocket,
13,16,33,36 ... Wall part, 15,35 ... Casing part, 18 ... Recessed part,
19 ... Side wall, 20 ... Cassette, 21 ... Cassette thickness increasing portion, 22
… Shaft insertion hole, 23… Magnetic head insertion opening, 24… Magnetic tape.

Claims (1)

[Scope of utility model registration request] 1. A cassette storage case in which a lid member having a pocket for accommodating the front opening of the cassette and a casing member having an anti-rotation projection are pivotally mounted to be openable and closable, and formed in the front opening of the cassette. extending to the cassette inserting direction with a cassette recess for receiving the increased thickness portion is formed on the upper and lower inner walls of said pocket, and these recesses the cassette thickness increasing portion of the cassette lateral width W ₁ larger casing lateral width W was Along with the front and back surfaces of the cassette, the recess on the wall side is larger than the sum of the cassette front-rear direction dimension L _{1 of the} cassette thickness increasing portion and the pocket depth dimension L _2, and the case front-rear direction from the back of the pocket. A cassette storage case having a width L.